package com.atguigu.config;

import com.atguigu.bean.Yellow;
import com.mchange.v2.c3p0.ComboPooledDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.EmbeddedValueResolverAware;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Profile;
import org.springframework.context.annotation.PropertySource;
import org.springframework.util.StringValueResolver;

import javax.sql.DataSource;
import java.beans.PropertyVetoException;

/**
 * @author 张晓
 * @create 2020-11-20 9:25
 *
 *
 * Profile:
 *      Spring为我们提供的可以根据当前环境，动态的激活和切换一些列组件的功能
 * 开发环境、测试环境、生产环境；
 * 数据源：(/A)(/B)(/C)
 * @Profile:指定组件在哪个环境的情况下才能被注册到容器中，不指定，任何环境下都能注册这个组件
 *
 * 1).加了环境标识的bean,只有这个环境被激活的时候才能注册到容器中,默认是default环境：@Profile("default")
 * 2).写在配置类上，只有是指定的环境的时候，整个配置类里面的所有配置才能生效
 * 3).没有标注环境标识的bean在任何环境下都是加载的
 */
@Configuration
@PropertySource("classpath:dbconfig.properties")
public class MainConfigOfProfile implements EmbeddedValueResolverAware {

    @Value("db.user")
    private String user;

    private StringValueResolver valueResolver;

    private String driverClass;


    @Bean
    public Yellow yellow(){
        return new Yellow();
    }

    @Profile("test")
    @Bean("testDataSource")
    public DataSource dataSourceTest(@Value("db.password") String pwd) throws PropertyVetoException {
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setUser(user);
        dataSource.setPassword(pwd);
        dataSource.setJdbcUrl("jdbc:mysql://192.168.10.250:3306/produce?characterEncoding=UTF-8&characterSetResults=UTF-8");
        dataSource.setDriverClass(driverClass);
        return dataSource;
    }
    @Profile("dev")
    @Bean("devDataSource")
    public DataSource dataSourceDev(@Value("db.password") String pwd) throws PropertyVetoException {
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setUser(user);
        dataSource.setPassword(pwd);
        dataSource.setJdbcUrl("jdbc:mysql://192.168.10.250:3306/produce?characterEncoding=UTF-8&characterSetResults=UTF-8");
        dataSource.setDriverClass(driverClass);
        return dataSource;
    }
    @Profile("prod")
    @Bean("prodDataSource")
    public DataSource dataSourceProd(@Value("db.password") String pwd) throws PropertyVetoException {
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setUser(user);
        dataSource.setPassword(pwd);
        dataSource.setJdbcUrl("jdbc:mysql://192.168.10.250:3306/produce?characterEncoding=UTF-8&characterSetResults=UTF-8");
        dataSource.setDriverClass(driverClass);
        return dataSource;
    }

    public void setEmbeddedValueResolver(StringValueResolver resolver) {
        this.valueResolver = resolver;
        driverClass = valueResolver.resolveStringValue("${db.driverClass}");
    }
}
